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The Atlantic meridional overturning circulation (AMOC) is an important tipping element in the climate system. There is a large uncertainty whether the AMOC will start to collapse during the century under future climate change, as this requires long climate model simulations which are not always available. Here, we analyze targeted climate model simulations done with the Community Earth System Model (CESM) with the aim to develop a physics-based indicator for the onset of an AMOC tipping event. This indicator is diagnosed from the surface buoyancy fluxes over the North Atlantic Ocean and is performing successfully under quasi-equilibrium freshwater forcing, freshwater pulse forcing, climate change scenarios, and for different climate models. An analysis consisting of 25 different climate models shows that the AMOC could begin to collapse by 2063 (from 2026 to 2095, to percentiles) under an intermediate emission scenario (SSP2-4.5), or by 2055 (from 2023 to 2076, to percentiles) under a high-end emission scenar
Stefan Rahmstorf, Professor of Physics os the Ocean at the University of Potsdam since 2000, presents a colloquium on the risks associated with the destabilization of the Atlantic Meridional Overturning Circulation (AMOC) and its potential consequences for the global climate.
Recent simulations using the Community Earth System Model (CESM) indicate that a tipping event of the Atlantic Meridional Overturning Circulation (AMOC) would cause Europe to cool by several degrees. This AMOC tipping event was found under constant pre-industrial greenhouse gas forcing, while global warming likely limits this AMOC-induced cooling response. Here, we quantify the European temperature responses under different AMOC regimes and climate change scenarios. A strongly reduced AMOC state and intermediate global warming (C, Representative Concentration Pathway 4.5) has a profound cooling effect on Northwestern Europe with more intense cold extremes. The largest temperature responses are found during the winter months and these responses are strongly influenced by the North Atlantic sea-ice extent. Enhanced North Atlantic storm track activity under an AMOC collapse results in substantially larger day-to-day temperature fluctuations. We conclude that the (far) future European temperatures are dependent o
While NGOs and Members of the European Parliament are calling for a ban on so-called "forever chemicals" in pesticides, only a few kilometres from Brussels, in Flanders, contamination is in full swing, even affecting organic farmers. PFAS (per- and polyfluoroalkyl substances) are chemicals used mainly for their water-repellent properties. Recent studies suggest that pesticide products may contain PFAS and that some active ingredients may meet the definition of a PFAS. This group of chemicals is a known threat to human health. Once in the environment, they are extremely persistent, earning them the nickname "forever chemicals".
The researchers estimated an extra 8,000 people would die each year as a result of “suboptimal temperatures” even under the most optimistic scenario for cutting planet-heating pollution. The hottest plausible scenario they considered showed a net increase of 80,000 temperature-related deaths a year.
Previous health impact assessments of temperature-related mortality in Europe indicated that the mortality burden attributable to cold is much larger than for heat. Questions remain as to whether climate change can result in a net decrease in temperature-related mortality. In this study, we estimated how climate change could affect future heat-related and cold-related mortality in 854 European urban areas, under several climate, demographic and adaptation scenarios. We showed that, with no adaptation to heat, the increase in heat-related deaths consistently exceeds any decrease in cold-related deaths across all considered scenarios in Europe. Under the lowest mitigation and adaptation scenario (SSP3-7.0), we estimate a net death burden due to climate change increasing by 49.9% and cumulating 2,345,410 (95% confidence interval = 327,603 to 4,775,853) climate change-related deaths between 2015 and 2099. This net effect would remain positive even under high adaptation scenarios, whereby a risk attenuation of 50%
Revealed: US climate denial group working with European far-right parties Representatives of Heartland Institute linking up with MEPs to campaign against environmental policies Helena Horton, Sam Bright and Clare Carlile Wed 22 Jan 2025 13.01 CET Last modified on Wed 22 Jan 2025 14.27 CET Climate science deniers from a US-based thinktank have been working with rightwing politicians in Europe to campaign against environmental policies, the Guardian can reveal. MEPs have been accused of “rolling out the red carpet for climate deniers” to give them a platform in the European parliament, amid warnings of a “revival of grotesque climate denialism”.
European nations must end the repression and criminalisation of peaceful protest and urgently take action to cut emissions in line with the Paris climate agreement to limit global heating to 1.5C, the UN special rapporteur on environmental defenders has said.
From farmers to disaster survivors, new plaintiffs and progressing lawsuits are putting pressure on industry polluters.
The law will come into force in national parks within two years and in all of the country’s marine protected areas by 2030
European and US oil and gas majors have made profits of more than a quarter of a trillion dollars since Russia invaded Ukraine, according to a new analysis by Global Witness marking two years since the conflict began. After posting record gains in 2022 off the back of soaring energy prices, the big five fossil fuel companies paid shareholders an unprecedented $111 billion in 2023. In the hottest year ever recorded, this figure is some 158 times what was pledged to vulnerable nations at last year’s COP28 climate summit.
We owe all children a planet Earth as wonderful as the one we have enjoyed!
In Munich I heard both Ukrainians and Alexei Navalny’s widow tell us why Putin must be defeated, says Guardian columnist Timothy Garton Ash
EUCityCalc has officially launched its free, open source online platform that allows local councils and other stakeholders to visualise and simulate low-carbon scenarios for their towns and cities, as well as to assess the trade-offs related to available choices.
In recent years, droughts have had substantial impacts on nearly all regions of the EU, affecting several critical systems such as agriculture, water supply, energy, river transport, and ecosystems. These impacts are projected to further increase due to climate change. While some of the drivers of drought risk are well known for some systems and regions, drought risks and impacts remain hard to assess and quantify. The European Drought Risk Atlas is a step towards impact-based drought assessment and can support the development and implementation of drought management and adaptation policies and actions. It characterises how drought hazard, exposure and vulnerability interact and affect different but interconnected systems: agriculture, public water supply, energy, riverine transport, freshwater and terrestrial ecosystems. The Atlas presents both a conceptual and quantitative approach to drought risk for these systems. The conceptual drought risk models (impact chains) are the result of a review of the literat
We owe all children a planet Earth as wonderful as the one we have enjoyed!
UK has led the way, with countries across the continent making mass arrests, passing draconian new laws and labelling activists as eco-terrorists
BP, Shell, and TotalEnergies found to be leading a multi-pronged influencing campaign that could lock in fossil gas across both continents, with push back coming from more renewables-focused European energy players.
Europe at the forefront of the climate challenge The European Union is a global leader in the transition to a net-zero greenhouse gas emissions economy. Playing a crucial role in international political efforts to tackle the climate challenge, Europe is one of the main players moving with urgency toward the Paris Agreement objectives. Now, with a European Green Deal and a commitment to reduce CO2 emissions by 55% by 2030, Europe has a clear, tangible roadmap to deliver such ambition. A wave of mass mobilisation, from climate marches to school strikes, is pressuring politicians to go further and faster. As a free-market democracy and the world’s largest single market, Europe is a key laboratory for innovative business and progressive social reform. It promises to bring groundbreaking change to globalised industries, from shipping to finance to aviation. Europe also has the power to demonstrate to the world that tackling climate change can go hand in hand with economic growth, social justice and a better qualit
The total concentration of greenhouse gases and other forcing agents, including cooling aerosols, reached 465 parts per million CO2 equivalents in 2020. This is around the peak level that the International Panel on Climate Change states 'should not be exceeded if — with a 67% likelihood and not allowing a temperature overshoot — the global temperature increase is to be limited to 1.5oC above pre-industrial levels'. When allowing for a temperature overshoot, the peak level could be exceeded in 2024. The peak concentrations corresponding to a temperature increase of 2oC by 2100 could be exceeded between 2027 and 2030.